Is Isobutylparaben Banned? EU vs US Status, Risks & Where It Hides
TL;DR: Isobutylparaben is banned in the EU but allowed in the US (parabens).
INCI name Isobutylparaben. CAS 4247-02-3.
Is Isobutylparaben banned in the EU?
| EU status | Banned |
|---|---|
| US status | Allowed |
| Risk level | high |
| Where it shows up | lotion, shampoo, makeup, deodorant |
| CAS number | 4247-02-3 |
What is Isobutylparaben?
Isobutylparaben is a paraben preservative used to prevent microbial growth in cosmetics.
Why is Isobutylparaben used in personal-care products?
Parabens are inexpensive, effective broad-spectrum preservatives.
Is Isobutylparaben dangerous? Documented risks
Isobutylparaben is an endocrine-disrupting paraben with weak estrogenic activity. The EU banned it in 2014; it remains unrestricted federally in the US.
Products that may contain Isobutylparaben
- lotion
- shampoo
- makeup
- deodorant
How to avoid Isobutylparaben: safer alternatives
Choose paraben-free products and EU-compliant brands. BannedPantry flags restricted parabens on the INCI list.
Frequently asked questions about Isobutylparaben
Is Isobutylparaben banned in the EU?
Isobutylparaben is banned under the EU Cosmetics Regulation (1223/2009), but it is allowed in US personal-care products.
Is Isobutylparaben in US cosmetics?
Yes — Isobutylparaben can still appear in US-sold cosmetics and personal-care products because US rules are far less restrictive than the EU's.
What products contain Isobutylparaben?
Read the INCI ingredient list on the back of the package. Scan the barcode with BannedPantry to flag Isobutylparaben automatically.
Are there safer alternatives to Isobutylparaben?
Yes. Look for EU-compliant or 'free-from' formulations; BannedPantry suggests safer swaps when it detects Isobutylparaben.
Scan any product's barcode and instantly see if it contains Isobutylparaben or other ingredients banned overseas.
Scan a product free →Related parabens
Avoiding banned beauty ingredients? Check your food, too.
Sources
- EU Cosmetics Regulation Annex II (prohibited substances) — EU Cosmetics Regulation 1223/2009
- EU endocrine disruptor list I — EU ED Lists
- EU-banned cosmetics ingredients and US impact — RegASK
Our scores are never influenced by brands. Last updated 6/11/2026.